tools/perf/tests/unit_number__scnprintf.c

   1 #include <linux/compiler.h>
   2 #include <linux/types.h>
   3 #include "tests.h"
   4 #include "util.h"
   5 #include "debug.h"
   6
   7 int test__unit_number__scnprint(int subtest __maybe_unused)
   8 {
   9         struct {
  10                 u64              n;
  11                 const char      *str;
  12         } test[] = {
  13                 { 1,                    "1B"    },
  14                 { 10*1024,              "10K"   },
  15                 { 20*1024*1024,         "20M"   },
  16                 { 30*1024*1024*1024ULL, "30G"   },
  17                 { 0,                    "0B"    },
  18                 { 0,                    NULL    },
  19         };
  20         unsigned i = 0;
  21
  22         while (test[i].str) {
  23                 char buf[100];
  24
  25                 unit_number__scnprintf(buf, sizeof(buf), test[i].n);
  26
  27                 pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n",
  28                          test[i].n, test[i].str, buf);
  29
  30                 if (strcmp(test[i].str, buf))
  31                         return TEST_FAIL;
  32
  33                 i++;
  34         }
  35
  36         return TEST_OK;
  37 }